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Do u mean straight through pipe 'thru' the cat, IE the cat has nothing in it?

The main effect is a $10k fine from the EPA, and a couple of extra rwkw

Having said that I just put a lovely straight thru side exit pipe on my gtr and it sounds *mean*.  Not to mention some hge flamage :)

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yeah, straight pipe instead of cat, then out the bottom of the passenger door, 3" straight thru. Not the thing for a street car tho :)

But seriously DVS33T, its a big risk to take, just run NOS instead if you want some easy power.

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hi, ive just been personally witnessing the effects of cat removal. It results in noticeable increase in spool time and the engine feels free-er (this is even after using a highflow cat). The amount of rwkw gained depends mainly on the amount of exhaust flow. If your nearly stock then it wont make much more power, but if your running up around 1.2 bar then you could see up to 10rwkw with tuning. It wont damage the engine. If you have a tuned aftermarket ecu it shouldnt flame or pop either. This is seen more with the stock ecus that run rich. Striaght thru pipe is simply a pipe with flanges on it that bolts in place of the cat, making a fully straight thru system.

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How exacly do you get your cat taken out?

Will exhaust places, like CES do it?

Seeing its illegal?

It would only be for track.. ofcourse

And seriously, how often do you, or you hear of someone getting pulled over and cops checking to see if you/they have a cat or not?

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Heya Duncan,

That sounds awesme, have you got any pics of this? have you much trouble with the cops yet? was any panel changes have to be made to get the exhaust out the side, something i have always wanted to have done buty just don't have the nads to do it.... WA cops aren't too friendly either... pics please so i can drool!

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Like I said its a race car not a road car so the cops seem ok with it :) No body changes so it is a little low (hangs 3" below the chasis rail)

Seriously tho, why run without a cat on the road. If you did get caught I think that fine would hurt.

As for side exit pipe on a road car theres a thread here: http://www.skylinesaustralia.com/forums/sh...light=side+pipe

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